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Sigma-Aldrich

Acetic anhydride

for synthesis

Sinonimo/i:

Acetic anhydride, Acetyl acetate, Acetyl oxide

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1 L
53,00 €
2.5 L
105,00 €
25 L
328,00 €

53,00 €


Spedizione prevista il22 aprile 2025Dettagli


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Cambia visualizzazione
1 L
53,00 €
2.5 L
105,00 €
25 L
328,00 €

About This Item

Formula condensata:
(CH3CO)2O
Numero CAS:
Peso molecolare:
102.09
Numero MDL:
Codice UNSPSC:
12352106
Numero indice EU:
203-564-8
NACRES:
NA.22

53,00 €


Spedizione prevista il22 aprile 2025Dettagli


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Grado

for synthesis
synthesis grade

Livello qualitativo

Tensione di vapore

4 hPa ( 20 °C)

Saggio

≥98.0% (GC)

Stato

liquid

Temp. autoaccensione

330 °C

Potenza

630 mg/kg LD50, oral (Rat)
4320 mg/kg LD50, skin (Rabbit)

Limite di esplosione

2.0-10.2 % (v/v)

pH

3 (20 °C, 10 g/L in H2O)

Punto di fusione

-73 °C

Temp. transizione

flash point 49 °C

Densità

1.08 g/cm3 at 20 °C

Temperatura di conservazione

2-30°C

Stringa SMILE

O(C(=O)C)C(=O)C

InChI

1S/C4H6O3/c1-3(5)7-4(2)6/h1-2H3
WFDIJRYMOXRFFG-UHFFFAOYSA-N

Descrizione generale

Acetic anhydride is a widely used reagent in organic synthesis. The reagent is effective for acetylating alcohols, amines, and thiols. Additionally, it is used in various named reactions such as the Pummerer reaction, the Perkin reaction, the Polonovski reaction, the N-oxide reaction, and the Thiele reaction. Acetic anhydride is an effective reagent during oxidation of alcohols, dehydration, ether cleavage, enol acetate formation, and gem-diacetate formation.[1]

Applicazioni

Acetic anhydride is used:
  • In the solvent free acylation of 2-methylfuran to 2-acetyl-5-methylfuran in presence of hydroxide fluorides catalyst.[2]
  • As a catalyst in the synthesis of 3-arylideneisobenzofuran-1(3H)-one derivatives from phthalic anhydride and quinoline derivatives.
  • In the preparation of hyperbranched poly ethoxy siloxanes by condensation reaction with tetra ethoxy silane in presence of an organotitanium catalyst.[3]

Risultati analitici

Assay (GC, area%): ≥ 98.0 % (a/a)
Density (d 20 °C/ 4 °C): 1.080 - 1.082
Identity (IR): passes test

Avvertenze

Danger

Indicazioni di pericolo

Classi di pericolo

Acute Tox. 2 Inhalation - Acute Tox. 4 Oral - Eye Dam. 1 - Flam. Liq. 3 - Skin Corr. 1B

Codice della classe di stoccaggio

3 - Flammable liquids

Classe di pericolosità dell'acqua (WGK)

WGK 1

Punto d’infiammabilità (°F)

120.2 °F - closed cup

Punto d’infiammabilità (°C)

49 °C - closed cup


Elenchi normativi

Forniamo informazioni su eventuali restrizioni prevalentemente per i prodotti chimici. Per altre tipologie di prodotto siamo in grado di fornire soltanto informazioni limitate. Nessuna segnalazione significa che nessuno dei componenti è citato in un elenco. È dovere dell’utilizzatore assicurarsi che il prodotto venga impiegato in maniera sicura e a norme di legge.

EU REACH Annex XVII (Restriction List)

CAS No.

Certificati d'analisi (COA)

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I clienti hanno visto anche

Slide 1 of 4

1 of 4

Inorganic hydroxide fluorides as solid catalysts for acylation of 2-methylfuran by acetic anhydride
Frouri F, et al.
Applied Catalysis. B, Environmental, 168, 515-523 (2015)
Acetic Anhydride
Regina Zibuck
Encyclopedia of Reagents for Organic Synthesis, Second Edition (2001)
One-pot synthesis of hyperbranched polyethoxysiloxanes
Zhu X, et al.
Macromolecules, 39(5), 1701-1708 (2016)

Domande

1–2 di 2 domande  
  1. How can I determine the shelf life / expiration / retest date of this product?

    1 risposta
    1. If this product has an expiration or retest date, it will be shown on the Certificate of Analysis (COA, CofA). If there is no retest or expiration date listed on the product's COA, we do not have suitable stability data to determine a shelf life. For these products, the only date on the COA will be the release date; a retest, expiration, or use-by-date will not be displayed.
      For all products, we recommend handling per defined conditions as printed in our product literature and website product descriptions. We recommend that products should be routinely inspected by customers to ensure they perform as expected.
      For products without retest or expiration dates, our standard warranty of 1 year from the date of shipment is applicable.
      For more information, please refer to the Product Dating Information document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/449/386/product-dating-information-mk.pdf

      Utile?

  2. How is shipping temperature determined? And how is it related to the product storage temperature?

    1 risposta
    1. Products may be shipped at a different temperature than the recommended long-term storage temperature. If the product quality is sensitive to short-term exposure to conditions other than the recommended long-term storage, it will be shipped on wet or dry-ice. If the product quality is NOT affected by short-term exposure to conditions other than the recommended long-term storage, it will be shipped at ambient temperature. As shipping routes are configured for minimum transit times, shipping at ambient temperature helps control shipping costs for our customers. For more information, please refer to the Storage and Transport Conditions document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/316/622/storage-transport-conditions-mk.pdf

      Utile?

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